SU1651392A1 - Radioelectronic unit - Google Patents

Abstract

The invention relates to radio engineering and can be used in supporting structures of radioelectronic equipment. The purpose of the invention is to simplify the design. For this, the radio-electronic unit, comprising a housing 1, in the guides of which printed circuit boards (not shown) are installed, and the clamps of printed circuit boards with elastic elements (not rocked), is equipped with two pairs of abutment plates 9, 10 with bevels at their ends, upper and lower The sides of housing 1 are made shorter than its sides by the width of elastic elements. Each clamp is made in the form of half-frames 3 and 4 with bosses with bevels and with holes for screws 12 and is installed with the possibility of interaction of bevels of its half-frames with bevels their plates 9, 10. 5 ill. AA is rotated (L

Description

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. The invention relates to radio engineering and can be used in the design of supporting structures of electronic equipment.

The purpose of the invention is to simplify the design by using clamps - and their elastic elements of a simpler configuration.

FIG. depicts a radio electronic unit, a general view, in axonometry; FIG. 2 is the same, top view with the clamps and rear panel removed; on fig.Z - section aa on figure 4 - section bb in figure 2; in Fig-, 5 - section bb In Fig.4.

The electronic unit includes a housing 1, cells 2, two clamps, each of which is formed by an upper 3 and lower 4 half-frames, a switching board 5 and a rear panel 6. On the upper and lower walls of the housing -1 there are guide grooves 7 along which cells 2 with printed circuit boards 8. Length of the upper and lower walls of the case are made smaller than the length of its side walls and the width of the elastic elements of the half-frames “On the side walls of the case 1 WITH TWO PARTIES OF THEIR DIRECTIONS

surfaces are fitted with thrust plates — front 9 and rear 10, having bevels at two ends in the form of a sliding surface. Each plate 9 and 10 with a bevel side is installed inside the case. On the rear plates 10, a guide groove 11 is provided for mounting the switching board 5 with counterparts for the cells with the boards. The cross-section of the upper 3 and lower 4 half-frames is made of an F-shaped profile with two stops in the form of bosses along the edges on the inner side of the upper shelf of the half-frame, while the stops have bevels in the form of a sliding surface that interacts with the sliding surface of the respective thrust plates 9 and 100 In the bosses of the upper half-frames 3 a threaded hole was made with a tightening screw 12 "In the bosses of the lower half-frames 4 there was a through hole made with the tightening screw 12 and a hole for sealing the screw head 12. On the inside surfaces v x poluramok 3 and 4 and the rear panel 6 are mounted elastic elements 13 and 14, respectively, made of, e.g., rubber

The assembly of the electronic unit is carried out as follows.

In the housing 1, along the directional grooves 41 of the rear thrust plates 10, a switching board 5 is installed. Then, all the cells 2 with the boards 8 are successively installed in the guide grooves 7 of the housing 1 until the articulating connectors of the cells with the corresponding mating parts of the connectors on the switching board 5 “Install the rear panel 6 with a dielectric elastic element in the form of a rubber frame in the direction of the board 5, thereby protecting the board 5 from mechanical damage. On the side of the board 5, install the top 3 and bottom 4 half frames of the rear press in such a way that the bevels of the half-frame lugs slide along the axes of the thrust plates 10, while the inner surfaces of the shelves of the L-shaped profile of the half-frames 3 and 4 hold the back panel 6. Two screws 12 pre-shrink the rear frame half-frame onto two or three threads of the screw thread 12 so that the elastic elements 13 of the half-frames only touch the boards 8. of the cells 2. Then the upper 3 and lower 4 half-frames of the front clamp are installed so that the bevels of their bosses interact with the bevels of the front thrust plates 9, and gi- vayut screws 12 poluramkk pressing front until it stops. In this case, the bevels of the half-frames 3 and 4 slide along the bevels of the plates 9, and the forces arising when tightening the screws 42 are laid out into two mutually perpendicular components, one of which provides the fitting of the connectors of the cells 2 with the connectors of the board 5, and the pins - sequential crimping and fixing of the front parts of the cells with the boards in a suspended state on the elastic elements of the 13 half-frames of the front clamp. Then, the rear clamp half-frame is finally shrunk, as a result of which a switching board 5 is placed on the back panel of the cells 2 with the boards 8, in a suspended state on the elastic elements 13 of the half-legs and the elastic element 14 of the rear panel 6.

The sealing of the electronic unit, if necessary, is carried out by filling the holes for the screw heads 12 in the bottom 52f with a mastic.

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Claims (1)

Claim A radio electronic unit containing a housing with guides located on its opposite sides — 25, printed circuit boards placed in the guides of the housing, and clamps | with elastic elements on their internal surfaces, installed with the possibility of interaction of their elastic elements with the ends of the printed plates facing them boards and fixed with fasteners, characterized in that, in order to simplify the design, it is equipped with two pairs of thrust plates with bevels, each clamp is made in the form of two half-frames G-arr of a different cross section with bosses with bevels and with holes for fasteners, the length of the sides of the body with the guides is less than the width of the elastic elements of the clamps than the length of its other sides, at the ends of which thrust plates are installed with the possibility of interaction of their bevels with the bevels of the bosses of a pair of half frames corresponding clamp, in the holes of which are placed the corresponding fasteners. . Editor S. Baker